l-gulonolactone

l-gulonolactone
The immediate precursor of ascorbic acid in those animals capable of ascorbic acid biosynthesis. SYN: dihydroascorbic acid, l- gulono-γ-lactone.
- l-gulonolactone oxidase the enzyme catalyzing the conversion of l-gulonolactone and O2 to H2O2 and l-xylo-hexulonolactone, a precursor of ascorbic acid; absent in humans.

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L-gu·lo·no·lac·tone (gu″lo-no-lakґtōn) the immediate precursor of ascorbic acid in plants and in those animals capable of its biosynthesis; gulonolactone is itself formed from L-gulonic acid.

Medical dictionary. 2011.

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